131194635263 has 16 divisors (see below), whose sum is σ = 133012519200. Its totient is φ = 129388976640.

The previous prime is 131194635227. The next prime is 131194635311. The reversal of 131194635263 is 362536491131.

It is a Cunningham number, because it is equal to 362208²-1.

It is a cyclic number.

It is not a de Polignac number, because 131194635263 - 2²⁰ = 131193586687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131194635163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39479120 + ... + 39482442.

It is an arithmetic number, because the mean of its divisors is an integer number (8313282450).

Almost surely, 2^131194635263 is an apocalyptic number.

131194635263 is a deficient number, since it is larger than the sum of its proper divisors (1817883937).

131194635263 is a wasteful number, since it uses less digits than its factorization.

131194635263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002.

The product of its digits is 349920, while the sum is 44.

The spelling of 131194635263 in words is "one hundred thirty-one billion, one hundred ninety-four million, six hundred thirty-five thousand, two hundred sixty-three".